Interface transparency to orbital current
arXiv:2406.01924 · doi:10.1103/PhysRevB.110.104418
Abstract
The transport of spin currents across interfaces is relatively well studied, while the transport properties of orbital currents are just starting to be examined. In Cr/Ni bilayers, the spin-orbit torque (SOT) due to the orbital current generated in the Cr layer is believed to dominate over torques of other origins. In this work, we study SOT in Cr/X/Ni trilayers, where X is an ultra-thin spacer of a different material. Using the SOT as a proxy for the orbital current transferred from the Cr to the Ni layer, we compare Cr/X/Ni results to Pt/X/Ni, the system in which spin current generated in the Pt layer plays a dominant role. We find that across 12 different spacers the apparent interface transparency to the orbital current is comparable or larger than to the spin current.
References in corpus (22)
- Study of Intrinsic Spin Hall Effect and Orbital Hall Effect in 4d- and 5d- Transition Metals
- Spin-Diffusion Lengths in Metals and Alloys, and Spin-Flipping at Metal/Metal Interfaces: an Experimentalist's Critical Review
- Role of transparency of platinum-ferromagnet interface in determining intrinsic magnitude of spin Hall effect
- Spin torque study of the spin Hall conductivity and spin diffusion length in platinum thin films with varying resistivity
- Intrinsic Spin and Orbital Hall Effects from Orbital Texture
- Observation of the orbital Hall effect in a light metal Ti
- Giant Orbital Hall Effect in Transition Metals: Origin of Large Spin and Anomalous Hall Effects
- Harnessing non-local orbital-to-spin conversion of interfacial orbital currents for efficient spin-orbit torques
- Gigantic intrinsic orbital Hall effects in weakly spin-orbit coupled metals
- Orbital Torque: Torque Generation by Orbital Current Injection
- Observation of long-range orbital transport and giant orbital torque
- Giant orbital Hall effect and orbital-to-spin conversion in 3d, 5d, and 4f metallic heterostructures
- Anomalous Spin-Orbit Torques in Magnetic Single-Layer Films
- Magneto-Optical Detection of the Orbital Hall Effect in Chromium
- Magneto-Optical Detection of the Spin Hall Effect in Pt and W Thin Films
- Maximizing Spin-Orbit Torque Generated by the Spin Hall Effect of Pt
- Non-trivial charge-to-spin conversion in ferromagnetic metal/Cu/Al2O3 by orbital transport
- Intrinsic orbital moment and prediction of a large orbital Hall effect in the 2D transition metal dichalcogenides
- Fully Spin-transparent magnetic interfaces enabled by insertion of a paramagnetic NiO layer
- Orbital Hanle Magnetoresistance in a 3d Transition Metal
- All-Optical Vector Measurement of Spin-Orbit-Induced Torques Using Both Polar and Quadratic Magneto-Optic Kerr Effects
- Orbital Magnetic Moment of Magnons
Cited by in corpus (5)
- Orbitronics in Two-dimensional Materials
- Orbital Pumping in Ferrimagnetic Insulators
- Giant orbital Hall effect due to the bulk states of 3D topological insulators
- Theoretical study of orbital torque: Dependence on ferromagnet species and nonmagnetic layer thickness
- Probing quantum geometric nonlinear magnetization via second-harmonic magneto-optical Kerr effect